Flush-bolt.



PATBNTED MAY 31, 1904. c. J. GALBY a; N. w. GRANDALL.

PLUSH BOLT. urmonron FILED JAN. 28. 1904.

N0 MODEL.

r 1 a v UNITED STATES Patented May 31, 1904.

PATENT OFFICE.

CHARLES J. OALEY, OF NEW BRITAIN, AND NATHAN W. CRANDALL, OF MERIDEN,CONNECTICUT, ASSIGNORS TO RUSSELL & ERWIN MANU FACTURING COMPANY, OF NEWBRITAIN,

TION OF CONNECTICUT.

CONNECTICUT, A CORPORA- FLUSH BOLT.

SPECIFICATION forming part of Letters Patent No. 761,145, dated May 31,1904.

A Application filed January 28, 1904. Serial No. 190 995. (No model.)

g which the following is'a full, clear, and exact section.

description.

Our invention relates to improvements in flush bolts; and it consists inimproving the structural details thereof hereinafter more fullydescribed.

Our invention has for its object simplicity,

economy, and durability of construction.

In the drawings, Figure 1 is a front elevation of the exposed part of aflush bolt embodying our invention. Fig. 2 is a vertical Fig. 3 is arear elevation. Fig. 1 is a plan view. Fig. 5 is a perspective view ofone of the details detached.

The construction is such that we are enabled to utilize wrought or sheetmetal, which enables us to produce finished articles with great rapidityand at a very much less cost than if the parts were cast and necessarilysubsee quently machined. The main body of the frame comprises a plate 1.(Shown detached in the perspective view, Fig. 5.) This plate may beformed of sheet metal and has acen-' tral longitudinal opening therein,the metal displaced in forming said opening being retained and utilizedas a guideway to support the sliding member of the bolt. This'maycomprise the side bars 2 2, having outwardlyflared edges or flanges 3 3.The metal at the upper and lower ends of the slot in the plate 1 is cutout to provide room for the fingerpiece of the operating-lever and togive access thereto. I

4 4 are slots formed in the side bars 2 2, in which the pivotal portionof the operatinglever is located.

5 is the slide, which is mounted on the side bars 2 2 of the guideway.The edges of said the spring-controlled link 15.

slide are curled under the flanges 3 3, as shown at 6 6, Fig. 4, to holdsaid parts against displacement. The slide 5 is, however, free toreciprocate up and down for the purpose of shifting the bolt.

7 is a rearward extension on the slide 5, and this part may have acountersunk portion 8, in the center of which is a screw-threadedopening 9, arranged to receive the threaded end of the shank 10 of thebolt proper.

11 is the operating-lever.

12 12 are trunnions which rest in notches & 1 in the side bars 2 2.

13 is a pivot-pin at the end of the lever 11, which makes engagementwith ears 14 14 on The link 15 is pivoted at one end to ears 16 on theslide-5.

17 is a spring the function of which is to cause the link 15 to normallyassume the position indicated in Fig. 2, wherein its free end restsagainst the back of the slide 5. This link may be actuated in anydesired way; but a'simple arrangement is indicated in the drawings, inwhich one end of the spring 17 is slightly hooked and passed through anopening in the link 15, while the other end is bowed upwardly andextended back underneath the pivoted end 16 of the connection 1 5, theextreme end of the spring 17 resting on a rearward proj'ection 5 of theslide'5. Bythis means the tension of the spring is applied in adirection to causethe free end of the connection 15 to swing towardan'dbear against the slide 5. When the link 15. is in this position, thenormal posi tion of the lever 11 will be as shown in Fig. 2, or exactlyreversed. The lever 11 may be provided with a suitable finger-piece 18and to facilitate operation. The plate 1,1 slide 5, guideways, link 15,spring 17 and the various connecting-ears may be readily shaped up fromsheet metal, and hence may be rapidly and economically produced. Thelever 18 may also be made of wrought metal. As a finish ing-piece, wemay provide a veneer-plate 1,

- save that instead of cutting out the rounded opening. adjacent toeither position of the finger-piece 18 the metal of the veneer-plate maymerely be struck down to form a bowllike recess. The intermediate partof the Veneer-plate l is of course provided with a longitudinal slotregistering with the longitudinal slot in the plate 1 between the sidebars 2 2. This gives a space for the free operation of thecontrolling-lever 11.

From the foregoing description it will be understood that the mechanismoperates as follows.

The swinging down of the lever from the position indicated in Fig. 1 andin the direction of the arrows indicated thereon will cause the free endof the link 15 to swing back and up, so that as the inner end of thelever 11 moves up it will impart to the slide 5 and theboltproperaeorrespondingmovement. When the lever has reached theposition opposite to that, indicated in Fig. 2, the link 15 will resumeits normal position. It should be noted that the bolt proper cannot bepushed up or down when the lever 11 is in either of its normalpositions, because the centers 12 13 are substantially in the line ofmovement or on a dead-center. In this way the mechanism is substantiallyself-locking. These bolts are applied ordinarily to doors, and the slideportion is located at a convenient height to enable the operator toeasily grasp the fingerpiece 18 of the operating-lever. The bolt,however, projects from either the upper or lower edge of the door, alongitudinal passage being bored in the door to permit the passage ofthe shank 10 therethrough and into engagement with the set-backextension 7 of the slide 5. Since it is necessary to insert theoperating mechanism first and the bolt subsequently, and because theoperator is necessarily working, in the dark when he seeks to enter theend of the shank 10 into the screw-threaded opening in the extension 7we have found it most desirable to countersink said rearward extension 7adjacent to said opening, whereby the end of the shank 10 will be guideddirectly to the screw-threaded passage therein.

One of the advantages of the foregoing construction resides in the factthat the frameplate 1 may be made of steel or iron, while theveneer-plate, which gives the finished appearance to the exposed part ofthe mechanism, may be formed of more costly metal. Obviously thisveneer-plate may be made of Very light stock and fitted. to the outlineof the subframe-plate. The bowl-like depressions in the veneer-plateserve to keepsaid plates in alinement, while the lever in either of itsoperative positions holds said veneerplate against accidentaldisengagement in handling or transportation.

While we have described the preferred form of our invention, it isobvious that modifieations may be made without departing from the spiritor scope thereof.

What we claim is- 1. In a' device of the character described, aframe-plate, a slide supported thereby and having a longitudinal passagetherethrough, a guideway formed integrally with said main plate, theslide being mounted on said guideway, a link hinged at the rear of theslide, means for pressing the free end of said link toward said slide, aswinging lever mounted on said frame-plate and making operativeconnection with said link through said longitudinal passage and arearwardly-extending portion arranged to receive said bolt.

2. In a device of the character described, a frame-plate, a slidesupported thereby and having a central passage, a guide on the rear ofsaid frame supporting said slide, a link hinged at the rear of theslide, a spring cooperating with said link and pressing its free endtoward said slide, a swinging lever mounted on said frame-plate andpivotally connected with said link through said central passage and abolt operatively connected with said slide.

3. In a device of the character described, a sheet-metal frame-plate, alongitudinal slot therein, the metal displaced in forming said slotbeing extended rearwardly to form guideways, a slide mounted on saidguideways, a pivoted operating-lever, a link connecting one end of saidoperating-lever with said slide and a bolt carried by the slide.

4. In a device of the character described, a sheet-metal frame-plate, alongitudinal slot therein the metal displaced in forming said slot beingpressed rearwardly to form guideways, aslide mounted on said guideways,a bolt carried by the slide, a lever pivoted on said guideways and alink hinged at the rear of said slide, a perforation in the slide saidlink and lever being connected through said perforation.

5. In a device of the character described, a sheet-metal frame -plate, aslide supported thereby, a bolt carried by said slide, anoperating-lever and means of connection between said operating-lever andsaid slide whereby by the swinging of said lever the slide may be movedup and down and a veneer-plate separate from but covering saidframe-plate.

6. In a device of the character described, in

. combination, a frame, a slide carried thereby Way carried thereby, asheet metal slide having integral flanges engaging said guideway, asheet-metal link pivotally connected with said slide and having integrallugs forming ears or bearings for an operating-lever; a swingingoperating-lever pivotally engaged by said ears on said link and a springcoaeting with said link to cause the same to press toward said slide.

CHAS. J. CALEY. NATHAN W. CRANDALL. Witnesses:

M. S. WIARD, F. E. SUNBURNi

